The formation of the warm dry lid over the southeast coastal region of china is mainly due to the advection of warm and dry air along the western side of subtropical anticyclone.

东南沿海干暖盖的形成主要是由副热带高压坝内对流层中低层的暖干空气由南海和两广地区沿西太平洋副热带高压西侧向东北平移的结果；

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The heavy fogs of Shangqiu are formed by the weather situations: continental anticyclone, warm zone in front of cold front, uniform pressure field, and low pressure with an inverted trough.

商丘市的大雾多形成在大陆高压型、冷锋前暖区型、均压场型、(低压)倒槽型天气形势中。

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